Write to your member of parliament and explain why you think it's terrible you can't just add these sort of extra earnings to your tax assessment at the end of

Write to your member of parliament and explain why you think it's terrible you can't just add these sort of extra earnings to your tax assessment at the end of the year. It's certainly possible in the UK to operate in this way but also more tax efficient once you get past say £40000 to run a limited company.